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Click on map to open large map in new window (Map updated: 11 August 2009)

Click here to view an interactive map of the Northern Ireland dataset as currently collated by CEDaR.The map is generated through the NBN Gateway using their Interactive Mapping Tool.

This crustose lichen has a slightly thicker and more wrinkly-uneven, grey, edge-zoned thallus than its look-a-like, P. amara, and white granular soredia that frequently coalesce into large, lumpier clumps. If a taste-test is carried out it will prove negative. Mature sheltered trees, frequent.